›› 2006, Vol. 27 ›› Issue (8): 1248-1252.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Multi-axial experimental study on creep and relaxation properties of red sandstone from somewhere

LI You1, 3, ZHU Wei-shen2, 3, PENG Yi1, LI Ni1, HUANG Chao-qiang4   

  1. 1. School of Civil and Architectural Engineering, Central South University, Changsha 410075, China; 2. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 3. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 4. China Communications Second Highway Survey, Design & Research Institue, Wuhan 430052, China
  • Received:2004-11-01 Online:2006-08-10 Published:2013-11-26

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Abstract: Compared with uniaxial experimental study on creep and relaxation properties of rock, multi-axial experiment study is very few, which makes 3-D creep and relaxation model of rock to be just simply extension without enough experiment verification. For gathering useful data and prompting development of multi-axial creep and relaxation model of rock, the following experiments were done with the red sandstone obtained from somewhere in Guangdong Province, China: (1) creep and relaxation properties of rock under different confining pressure; (2) creep and relaxation properties of rock subjected to pressures from two directions; (3) comparison of creep and relaxation properties between air-dried and saturation samples under multi-axial pressure. By analyzing experimental results, some features or phenomena are found on creep and relaxation properties of the red sandstone, for example, when axial pressures are the same, the higher confining pressure is, the smaller creep is, when confining pressures and relaxation time are the same, the higher is, the larger relaxation of is; etc.. All these are of some significance to theoretical study of rock mechanics and the design and construction of practical engineering.

Key words: rock mechanics, creep, relaxation, saturation, red sandstone

CLC Number: 

  • TU 458+.4
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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